TY - JOUR
T1 - A LINE-1 mediated deletion resulting in germline retinoblastoma predisposition
AU - Macke, Erica L.
AU - Miller, Anthony R.
AU - Stonerock, Eileen
AU - Olshefski, Randal
AU - Zajo, Kristin
AU - Bedrosian, Tracy A.
AU - Mardis, Elaine R.
AU - Akkari, Yassmine M.N.
AU - Cottrell, Catherine E.
AU - Schieffer, Kathleen M.
N1 - Publisher Copyright:
© The Author(s) 2024. Published by Oxford University Press on behalf of NAR Cancer.
PY - 2024/1/1
Y1 - 2024/1/1
N2 - Retinoblastoma is an ocular cancer associated with genomic variation in the RB1 gene. In individuals with bilateral retinoblastoma, a germline variant in RB1 is identified in virtually all cases. We describe herein an individual with bilateral retinoblastoma for whom multiple clinical lab assays performed by outside commercial laboratories failed to identify a germline RB1 variant. Paired tumor/normal exome sequencing, long-read whole genome sequencing, and long-read isoform sequencing was performed on a translational research basis ultimately identified a germline likely de novo Long Interspersed Nuclear Element (LINE)-1 mediated deletion resulting in a premature stop of translation of RB1 as the underlying genetic cause of retinoblastoma in this individual. Based on these research findings, the LINE-1 mediated deletion was confirmed via Sanger sequencing in our clinical laboratory, and results were reported in the patient's medical record to allow for appropriate genetic counseling.
AB - Retinoblastoma is an ocular cancer associated with genomic variation in the RB1 gene. In individuals with bilateral retinoblastoma, a germline variant in RB1 is identified in virtually all cases. We describe herein an individual with bilateral retinoblastoma for whom multiple clinical lab assays performed by outside commercial laboratories failed to identify a germline RB1 variant. Paired tumor/normal exome sequencing, long-read whole genome sequencing, and long-read isoform sequencing was performed on a translational research basis ultimately identified a germline likely de novo Long Interspersed Nuclear Element (LINE)-1 mediated deletion resulting in a premature stop of translation of RB1 as the underlying genetic cause of retinoblastoma in this individual. Based on these research findings, the LINE-1 mediated deletion was confirmed via Sanger sequencing in our clinical laboratory, and results were reported in the patient's medical record to allow for appropriate genetic counseling.
KW - LINE-1
KW - cancer predisposition
KW - long-read sequencing
KW - retinoblastoma
UR - http://www.scopus.com/inward/record.url?scp=85182567837&partnerID=8YFLogxK
U2 - 10.1093/noajnl/vdad163
DO - 10.1093/noajnl/vdad163
M3 - Review article
AN - SCOPUS:85182567837
SN - 2632-2498
VL - 6
JO - Neuro-Oncology Advances
JF - Neuro-Oncology Advances
IS - 1
M1 - 6
ER -